It is more and more acknowledged that agroecological innovations, such as agroforestry practices, should be co-created through a combination of research and traditional knowledge, be context adaptable, and meet the needs of producers and consumers. The word “innovation” recognises that agroforestry practices do exist everywhere in the world. However, to be able to effectively respond to global challenges and changes (demography and social changes, climate, local to international markets), speaking about "innovations" implies that these practices could be improved or transformed or reintroduced everywhere they had disappeared or are in decline. This reality is still current despite the significant number of research and innovation programmes, the volume of mobilized funds and the number of participating organizations. Increasing adoption of agroforestry practices also requires long term planning and coordination because trees’ life cycles are often longer than human life. This special issue includes papers on some agroforestry innovations that merit consideration for scaling up, on successful experiences that answer priorities expressed by stakeholders while taking into account their constraints, and on systemic approaches and frameworks to the development of more comprehensive perspectives on scaling up.

人们越来越认识到，农业生态创新，如农林业实践，应该通过研究和传统知识的结合来共同创造、适应环境并满足生产者和消费者的需求。“创新”一词承认农林业实践确实存在于世界各地。然而，为了能够有效应对全球挑战和变化（人口和社会变化、气候、本地到国际市场），谈论“创新”意味着这些实践可以在它们消失或存在的任何地方得到改进、转变或重新引入。衰退。尽管有大量研究和创新计划、筹集的资金和参与组织的数量众多，但这一现实仍然存在。越来越多地采用农林业做法还需要长期规划和协调，因为树木的生命周期通常比人类的生命周期更长。本期特刊包括一些值得考虑扩大规模的农林业创新的论文，关于在考虑到利益相关者的限制的同时回答优先事项的成功经验，以及关于发展更全面的扩大观点的系统方法和框架。